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Thanks all. Several suggestions worked well. I chose the 2nd statement
that Elvis came up with as it seemed the easiest to understand for
maintenance. I was hoping that a Zoned(myField), DEC(myField) or a
Char(myField) would return a null that could be tested (Where Zoned(myField)
is null). What I get is an data decimal error when SQL tries to retrieve
the records.

Jim


On Mon, Jul 13, 2009 at 1:55 PM, Elvis Budimlic <
ebudimlic@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote:

Not overly ugly for a one time thing... perhaps:

select rrn(a),hex(myField), f1 from myLib/myFile a
where substring(hex(myField), 1,1) <> 'F' and
substring(hex(myField), 3,1) <> 'F' and
substring(hex(myField), 5,1) <> 'F' and
substring(hex(myField), 7,1) <> 'F' and
substring(hex(myField), 9,1) <> 'F' and
substring(hex(myField),11,1) <> 'F' and
substring(hex(myField),13,1) <> 'F' and
substring(hex(myField),15,1) not in ('F','D')

or

select rrn(a),hex(myField), f1 from myLib/myFile a
where 'F' not in
(substring(hex(myField), 1,1),
substring(hex(myField), 3,1),
substring(hex(myField), 5,1),
substring(hex(myField), 7,1),
substring(hex(myField), 9,1),
substring(hex(myField),11,1),
substring(hex(myField),13,1)) AND
substring(hex(myField),15,1) not in ('F','D')

Hth, Elvis

Celebrating 11-Years of SQL Performance Excellence on IBM i, i5/OS and
OS/400
www.centerfieldtechnology.com


-----Original Message-----
Subject: Re: Finding invalid data in zoned numeric fields with SQL

Elvis,

Nice thought! The concern I have is if the first position of the field has
an "F" value in the left nibble for that byte, that does not mean the rest
of the field has valid values. I think I am going to have to test all bytes
for valid values, if SQL does not have nice function to do it for me. That
could get a little ugly with an 8 digit field.

Yes - I believe the software vendor did create this with DDS, and even
thought it is defined as Zoned, it somehow allows invalid data to be added
to the file in 4 fields.

Thanks!

Jim


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